Bar chapter in deluxe development (7)
I believe the answer is:
exclude
'bar' is the definition.
(synonyms)
'chapter in deluxe development' is the wordplay.
'chapter' becomes 'c'.
'in' indicates putting letters inside.
'development' is an anagram indicator.
'deluxe' with letters rearranged gives 'exlude'.
'c' going within 'exlude' is 'EXCLUDE'.
(Other definitions for exclude that I've seen before include "Rule out" , "Debar" , "Omit - ban" , "Omit, reject" , "Bar, ban" .)